157783 has 4 divisors (see below), whose sum is σ = 159768. Its totient is φ = 155800.

The previous prime is 157771. The next prime is 157793. The reversal of 157783 is 387751.

157783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157783 - 2⁹ = 157271 is a prime.

It is a Duffinian number.

157783 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868 + ... + 1033.

It is an arithmetic number, because the mean of its divisors is an integer number (39942).

2¹⁵⁷⁷⁸³ is an apocalyptic number.

157783 is a deficient number, since it is larger than the sum of its proper divisors (1985).

157783 is an equidigital number, since it uses as much as digits as its factorization.

157783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its digits is 5880, while the sum is 31.

The square root of 157783 is about 397.2190831267. The cubic root of 157783 is about 54.0364408809.

The spelling of 157783 in words is "one hundred fifty-seven thousand, seven hundred eighty-three".